Papers, Addresses, Reports: Some Problems in the Origin of the Mineral Veins (Address of the Retiring President); History and Forecast of Population of the State of Illinois; Extract From the Report of the Section Chairman (Agriculture);...

Papers, Addresses, Reports: Recent Developments in the Chemistry of the Rare Earth Group (Address of the Retiring President); The Significance of the Conservation of Land Resources; Classification of Illinois Lands; Soil Erosion Control...

Papers, Addresses, Reports: Advancement in the Science of Public Health; Medical Science, its Past, Present, and Future; Psychiatry in the Criminal Courts of Cook County; Memoirs: Ulysses Sherman Grant, John Paul Goode; Extract from the Report...